THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
...
Lucene 8.9 Release Highlights
- Compression was added to SortedSet DocValues, which allowed to significantly reduce their size on disk.
- BM25FQuery was extended to handle similarities beyond BM25Similarity. It was renamed to CombinedFieldQuery to reflect its more general scope.
- A new PatternTypingFilter was added to allow setting a type attribute on tokens based on a configured set of regular expressions.
- An option was added to supply a custom leaf sorter for IndexWriter and DirectoryReader, which allows to speed up sort queries with a provided sort criteria. Enable bulk merge for stored fields with index sort. Merging of stored fields that are used for index sorting is done now through bulk-merges (i.e., raw chunk copying), which reduces the merge time for these fields by 20%.
Further details of changes are available in the change log available at: http://lucene.apache.org/core/8_9/changes/Changes.html
...